NSString sizeWithAttributes: Inaccuracy

Posted by dave-gennel on Stack Overflow See other posts from Stack Overflow or by dave-gennel
Published on 2010-03-13T18:15:55Z Indexed on 2010/03/13 19:05 UTC
Read the original article Hit count: 269

Filed under:

nsstring

|

attributes

|

objective-c

I want to know the width of an NSString displayed on the screen in pixels. So I can fit an NSTextField its bounds to be exactly the length of the string itself. So I used IB's "Label" NSTextField and for those who don't know what I mean, I got a label with title "Label", font "Lucida Grande 13px", not selectable, not editable, regular size, no background and according to IB its width is 38px wide.

If I want to get its width programatically I use

[@"Label" sizeWithAttributes: [NSDictionary dictionaryWithObject: [NSFont fontWithName: @"Lucida Grande" size: 13] forKey: NSFontAttributeName]].width

Which will give me 33.293457 . So that's about 5 px of the real width..

© Stack Overflow or respective owner

Related posts about nsstring

Encoded nsstring becomes invalid, "normal" nsstring remains

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm running into a problem with a string that contains encoded characters. Specifically, if the string has encoded characters it eventually becomes invalid while a "normal" string will not. in the .h file: @interface DirViewController : TTThumbsViewController <UIActionSheetDelegate,UINavigationControllerDelegate… >>> More
NSString drawAtPoint Crash on the iPhone (NSString drawAtPoint)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hey. I have a very simple text output to buffer system which will crash randomly. It will be fine for DAYS, then sometimes it'll crash a few times in a few minutes. The callstack is almost exactly the same for other guys who use higher level controls: http://discussions.apple.com/thread.jspa?messageID=7949746 http://stackoverflow… >>> More
NSMutableArray to NSString and Passing NSString to Another View IOS5.1

as seen on Stack Overflow - Search for 'Stack Overflow'
I have an NSMutableArray of names. I want the pass the data (selected name) inside of NSMutableArray as text to another view's label. FriendsController.m: - (void)viewDidLoad { [super viewDidLoad]; arrayOfNames=[[NSMutableArray alloc] init]; arrayOfIDs=[[NSMutableArray alloc] init]; … >>> More
Where is my object allocation and memory leak in this iPhone/objective C code?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I'm still a rookie when it comes to this programming gig and was wondering if someone could help me smooth out this code. Functionally, the code works great and does what I need it to do. But when I run the performance tool the allocation graph peaks, the CPU load is high, there's a leak(s)… >>> More
Adding Custom Object to NSMutableArray

as seen on Stack Overflow - Search for 'Stack Overflow'
Developing ios app. I have an object class Product.h and .m respectively along with my picker class which implements my vehicle selection to match products to vehicle. The files product.h #import <Foundation/Foundation.h> @interface Product : NSObject { } @property (nonatomic, retain)… >>> More

Related posts about attributes

Delete Nodes + attributes that match Xpath except specific attributes

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to find the best (efficient) way of doing this. I have a medium sized XML document. Depending on specific settings certain portions of it need to be filtered out for security reasons. I'll be doing this in XSLT as it's configurable and no code should need changing. I've looked around… >>> More
what is difference between attr_accessible(*attributes) & attr_protected(*attributes)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, I want to know what is difference between attr_accessible(*attributes) & attr_protected(*attributes) with example if any. I see many developers used it in there model. i google around it but i don't get exactly what is the importance of that so i like if someone explain me the importance… >>> More
Sorting deeply nested attributes in Rails

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to be able to drag and drag App model which is nested under Category model. http://railscasts.com/episodes/196-nested-model-form-part-1 's the Railscast I've tried to follow. Category controller def move params[:apps].each_with_index do |id, index| Category.last.apps.update(['position=… >>> More
KnownType Not sufficient for Inclusion

as seen on Programmers - Search for 'Programmers'
Why isn't the use of KnownType attribute in C# sufficient for inclusion of a DLL? Working with Visual Studio 2012 with TFS responsible for builds, I am on a project in which a service required use of this attribute as in the following: using Project.That.Contains.RequiredClassName; [ServiceBehavior(InstanceContextMode… >>> More
ASA hairpining: I basicaly want to allow 2 spokes to be able to communicate with each other.

as seen on Server Fault - Search for 'Server Fault'
ASA Spoke to Spoke Communication I have been looking at spke to spoke comms or "hairpining" for months and have posted on numerouse forums but to no avail. I have a Hub and spoke network where the HUB is an ASA Firewall version 8.2 * I basicaly want to allow 2 spokes to be able to communicate with… >>> More